niudun

二阶椭圆偏微分方程的差分算法，适用于求解矩形区域，任意边界条件。(elliptic partial differential equation algorithm applied to solving rectangular region, arbitrary boundary conditions.)

nonlocal mean for 2-D 3-D IMAGE PROCESSING

王旭东，靳雁霞编著 《MATLAB及其在FPGA中的应用》国防工业出版社 随书程序(Wang Xudong, Jinyan Xia edited the " MATLAB and its application in the FPGA" National Defense Industry Press with the book program)

改进的Salama博士的网络拓扑随机生成算法(Dr Improved Salama random generation algorithm of network topology)

Newton插值公式实例，改变插值节点个数，观察不同的插值函数的逼近效果.(Instance of the Newton interpolation formula, change the number of interpolation nodes, and observe the different interpolation function approximation.)

带约束因子的粒子群算法在电力系统无功优化中的应用(Constrained factor PSO in Reactive Power Optimization)

为了抑制两电平逆变器输出中产生的共模电压，本算法采用在代价函数中加入相应的权重系数使得共模电压得到抑制(In order to suppress the common-mode voltage generated in the output of two-level inverters, the algorithm uses the corresponding weight coefficient in the cost function to suppress the common-mode voltage.)

matlab应用于捷联惯导系统初始对准滤波技术程序(matlab applies SINS initial alignment procedures Filtering Technique)

此代码用于完成MRI图像的压缩采样重建。它是论文"Sparse MRI: The Application of Compressed Sensing for Rapid MR Imaging", 2007中的源码(This is an implementation of Compressed Sensing reconstruction for MRI data. It implements the non-linear conjugate sub-gradient algorithm as described in the paper "Sparse MRI: The Application of Compressed Sensing for Rapid MR Imaging", 2007 Magn Res Med, In Press. )

Modelo de dos rayos de Andrea Goldsmith (figura 2.5, según expresión 2.12) f = 0.9 frecuencia en GHz landa = 0.3/f en m R = -1 coeficiente de reflexión en tierra ht = 10 altura del transmisor en m hr = 2 altura del receptor en m Gt = 1 Gr = 1 Pt = 1 d=10:.1:100000 phase_diff = 4*pi*ht*hr./(landa*d) aproximación Pr = Pt*((landa/(4*pi))^2)*((abs((sqrt(Gt)./d) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff)))./d)).^2) Pr = Pt*((landa/(4*pi))^2)*(1./d).*((abs((sqrt(Gt)) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff))))).^2) figure(1), clf, plot((d),10*log10(Pr/max(abs(Pr)))) grid xlabel( log_1_0(d) ) ylabel( Potencia recibida (dBm) )